Kuppersbusch MW 900 Manuel utilisateur

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Service Manual: H4-070-14-01

Responsible: D. Rutz KÜPPERSBUSCH HAUSGERÄTE AG

Email: dieter.rutz@kueppersbusch.de

Tel.: (0209) 401-733 Kundendienst

Fax: (0209) 401-743 Postfach 100 132

Date: 17.03.2000 45801 Gelsenkirchen

Service Manual MWG 1000 3

Only for internal use

Contents

1. Description of type ......................................................................................................... 4

2. Repair and maintenance ................................................................................................ 6

2.1 Technical data MWGD 900.0 ................................................................................ 7

2.2 New features ....................................................................................................... 11

2.3 Description of the components and their functions ............................................. 12

3. Repair and maintenance .............................................................................................. 13

3.1 Dismantling of the cooker hood for repair work................................................... 14

3.2 Microwave oven and cooker hood controls ......................................................... 15

3.3 Dismantling and assembling the appliance ......................................................... 16

4. Measurements and adjustments................................................................................. 23

4.1 Component testing .............................................................................................. 24

5. Installation..................................................................................................................... 26

5.1 Dimensions.......................................................................................................... 26

5.2 Methods of assembly .......................................................................................... 26

5.3 Notes on installation ............................................................................................ 27

5.4 Wiring diagram for MWG 1000............................................................................ 33

5.5 Wiring diagram for MWG 1000............................................................................ 34

5.6 Wiring diagram for MW 900.0.............................................................................. 38

5.7 Wiring diagram for MWGD 900.0 ........................................................................ 39

4 Service Manual MWG 1000

Only for internal use

1. Description of type

Type Features

MWGD 900.0 Combined microwave oven/cooker hoods with dual

microwave feed up to 900 watts, quartz grill and hot air

convection possible.

Rapid start, automatic defrosting, 201 stainless steel oven.

MWG 1000.0 Microwave with dual microwave feed up to 1000 watts,

quartz grill 900 watts, rapid start, automatic defrosting,

201 stainless steel oven cavity, turntable.

MW 900.0 Microwave with dual microwave feed up to 900 watts,

rapid start, automatic defrosting, 201 stainless steel oven

cavity with turntable and electronic clock.

MW 800.0 Microwave with feed up to 750 watts, 99 minutes 99

seconds timer, power control with 10 cooking modes,

4-step automatic programm control.

Service Manual MWG 1000 5

Only for internal use

Introduction

Every appliance is carefully tested before it leaves the factory. However it is important that it is

assembled and operated correctly.

Despite all safety measures, the safety of the appliance depends on it being correctly installed. It is

equally important for the user to operate the appliance correctly and to carry out the appropriate

maintenance measures.

It is extremely important for the owner to read through the operating instructions before using the

appliance for the first time to ensure that it is operated correctly, that it works safely and that good results

are obtained.

WARNING - MICROWAVE ENERGY

NOBODY SHOULD BE EXPOSED TO THE MICROWAVE ENERGY RADIATED BY

THE MAGNETRON, THE WAVEGUIDE OR THE ANTENNA IF THESE ARE

OPERATED INCORRECTLY OR HAVE BEEN IMPROPERLY CONNECTED. ALL

MICROWAVE TERMINALS FOR INPUT AND OUTPUT, THE WAVE GUIDE AND

ALL FLANGES AND SEALS MUST BE FASTENED AND SEALED CORRECTLY.

THE APPLIANCE MUST NEVER BE PUT INTO OPERATION WITHOUT THE OVEN

CONTAINING A LOAD THAT ABSORBS MICROWAVE ENERGY. NEVER LOOK

INTO AN OPEN WAVEGUIDE OR AN ANTENNA WHEN THE MAGNETRON IS

UNDER VOLTAGE. THE APPLIANCE MUST NEVER BE OPERATED WITHOUT

THE CASE EXCEPT WHEN IT IS BEING GIVEN A TRIAL RUN. IN THIS CASE,

HOWEVER, THE MAGNETRON AND THE VISIBLE MICROWAVE TERMINALS

MUST BE MEASURED FOR MICROWAVE LEAKAGE.

ATTENTION

The appliance must not be used under the following conditions:

- if the door does not close properly and does not fit the frame because it is distorted or because the

hinges have been damaged,

- if the door or the door seal are damaged,

- if the appliance shows obvious signs of damage,

- if the door does not close properly.

The appliance must not be used if any of the components of the door interlock system, the door or any

parts of the high-frequency circuit are damaged. These parts must be replaced.

6 Service Manual MWG 1000

Only for internal use

2. Repair and maintenance

IMPORTANT NOTES

All work and repairs on the components of microwave ovens may only be carried out

by a qualified service technician who has been trained by the manufacturer and

authorized to carry out such work.

Safety can be increased by using special tools such a TORX screwdriver and

measuring instruments to test microwave leakage.

In order to prevent accidents and damage to the appliance, the following rules should

be observed when carrying out repairs:

♦Before opening up the case disconnect the appliance from the mains or switch

off the main switch of the appliance. Wait at least 3 minutes.

♦Before beginning the work, the technician should take off his watch and, if

necessary, his metal bracelets. Never touch high-tension parts and wires.

♦Before checking or exchanging, discharge the high-voltage capacitor for the

appliance housing with an insulated conductor. Before shorting the capacitor

terminal make sure that the conductor to the housing has been earthed.

♦Do not use a usual voltmeter to measure the high tension.

The following points must be checked before the appliance is reconnected to the mains:

♦that all internal terminals have been properly connected;

♦that all wires are insulated and that they do not come into contact with the door

of the appliance, with the case or with any sharp edges;

♦that all grounding terminals are in perfect condition, electrically and

mechanically;

♦that no changes have been made to the built-in safety devices and that they are

not manipulated in any other way;

♦that all spare parts conform to the manufacturers specifications.

Service Manual MWG 1000 7

Only for internal use

2.1 Technical data MWGD 900.0

Technical requirements

Measured at an ambient temperature of 25°C.

Electrical system

All voltages are based on average values.

Nominal input voltage

207 - 244 V

Output

210 - 244 V

Test voltage (statutory requirement):

207 - 244 V

Electrical terminals (EN-335-1):

230 V

Frequency

50 Hz

Phases

Single-phase Operation

Nominal power input

Microwave 1500 W (short), 1400 W (long)

Grill 900 W

Crisp (Grill + MW) 2550 W

Cooker hood 355 W / 290 W (incandescent lamps / PL lamp)

In total 2850 W / 2775 W (cold operation), 2600 W / 2550 W (hot operation)

(incandescent lamps / PL lamp)

8 Service Manual MWG 1000

Only for internal use

Nominal power input

Microwave 7 A

Grill 4.2 A

Crisp 11 A

Crisp 10 A (CH / DK)

Cooker hood 2.3 A / 2.2 A (incandescent lamps / PL lamp)

In total 13 A / 12.5 A (cold operation), 11.7 / 11 A (hot operation)

(incandescent lamps / PL lamp)

Fuses

DE 16 AL

16 AH

Features of the microwave oven

Power output 850 W +10 % /- 50 W

(according to IEC 7051) (when the oven is empty)

Output regulated by ON / OFF switch

Duration of cycle 20.5 sec.

Power levels 8 (between 0 W and 850 W)

Features of the quartz grill

Power density 2.2 W / cm²

Grilling space 330 cm²

Heating uptime 30 sec.

Max. power input at 230 V 900 W

Features of the cooker hood in accordance with DIN 44971

Air suction (exhaust air) 360 m3/ hour

Air suction (recirculating air) 240 m3/ hour

Pressure 345 Pa

Timer

90 minutes

Oven lamp

Energy saver 1000 hours, 240 V max. 25 W, cannot be exchanged by customers.

Cooker hood lamp

Standard lamp 2 x 40 W 230/240V E14, can be exchanged by customers.

Service Manual MWG 1000 9

Only for internal use

Mechanics

Weight

Gross 40 kg

Net 36 kg

Dimensions

Outer dimensions 598 x 340 x 540 mm (W x H x D)

Gross dimensions of oven cavity 335 x 290 x 1 85mm (18.0 1)

Useable volume lEC 705 290²x PIE x 173

Fitting space dimensions

Visible parts 600 x 340 x 540 mm (W x H x D)

With exhaust part 600 x 340 x 540 mm (W x H x D)

Distance from hob at least 430 mm

Exhaust pipes 120 mm

Building-in kit 4-point holder System

Distance from wall adjustable from 0 - 40 mm, in steps of 5 mm

Load-bearing capacity at least 60 kg on holder system

The appliance can be built in without removing the decorative parts.

When the appliance is being serviced, it should be possible to remove the microwave unit and the fan

motor without dismounting the entire appliance.

Material of the oven cavity

Non-rust steel

Technical details

Noise level

MW 58 dBA (1 pW) IEC704

125 Hz max. 66 dB

250 Hz max. 62 dB

Cooker hood 68 dBA (exhaust air)

67 dBA (exhaust air)

In total 68 dBA (exhaust air)

67 dBA (exhaust air)

Hob lighting

Distance of 430 mm 290 / 315 lux (incandescent lamps / PL lamp)

Distance of 650 mm 230 / 240 lux (incandescent lamps / PL lamp)

10 Service Manual MWG 1000

Only for internal use

Microwave feed, turntable

The microwaves are fed into the oven in two

places. This novel system is known as Dual

Microwave Feed (DMF). The rotation of the

turntable ensures that the microwave energy

is evenly absorbed by the food. The turnta-

ble consists of a roller stay and a glass plate.

Grill (MWDG 900.0 and MWG 1000.0)

The grill element is a high-output quartz grill

consisting of two glass tubes connected in

a cascade. They are accommodated in a

special case mounted at the top of the oven

cavity. In order to make it impossible to

touch the glass tubes they have the

additional protection of an internal ceiling

which is welded to the inside of the oven.

The grill element cannot be cleaned inside

the oven.

Grill cannot be

folded down!

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